The flow of groundwater affects the transport of heat, subsequently impacting the heat transfer performance of energy diaphragm walls. To investigate the effect of groundwater flow on the thermal performance of energy diaphragm walls in the actual project, a three-dimensional finite element model of the thermo-hydro coupling was established. This model's accuracy was confirmed using in-situ experimental data. Subsequent analyses explored the influence of groundwater flow velocity on the long-term heat transfer efficiency of energy diaphragm walls and the temperature field distribution in both the wall and adjacent soil during winter/summer cyclical operations. Studies have shown that the increase of groundwater flow velocity can promote the migration of heat accumulated in the wall and in the soil around the wall to a position farther away from the wall along the flow direction, thereby promoting the long-term heat exchange efficiency of the thermo-active diaphragm walls. Moreover, as winter and summer operating conditions transition, the previously accumulated heat in the wall and surrounding soil aids in boosting the current mode's heat exchange efficiency. In addition, groundwater flow also facilitates the movement of heat accumulated at the bottom of the excavation face, allowing the ground's temperature field to stabilize faster. This indirectly bolsters the heat exchange efficiency of the energy diaphragm walls. The research results may enrich the understanding of the heat transfer behavior of energy diaphragm walls under actual working conditions.

中文翻译：

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地下水流条件下能量连续墙传热性能研究

地下水的流动影响热量的传输，进而影响能量连续墙的传热性能。为了研究实际工程中地下水流对能源连续墙热性能的影响，建立了热-水耦合三维有限元模型。使用现场实验数据证实了该模型的准确性。随后的分析探讨了地下水流速对能量连续墙长期传热效率的影响以及冬夏循环运行期间墙体和邻近土壤温度场分布的影响。研究表明，地下水流速的增加可以促进墙体及墙体周围土壤中积聚的热量沿流动方向迁移到距墙体较远的位置，从而促进地下水的长期换热效率。热活性连续墙。此外，随着冬季和夏季运行条件的转变，先前在墙壁和周围土壤中积累的热量有助于提高当前模式的热交换效率。此外，地下水的流动也有利于开挖面底部积聚的热量的移动，使地面温度场更快稳定。这间接提高了能量隔墙的热交换效率。研究结果可丰富对实际工况下能量连续墙传热行为的理解。